Cita APA (7a ed.)

Berenstein, C. A., & Gay, R. (1991). Complex variables: An introduction. Springer.

Cita Chicago Style (17a ed.)

Berenstein, Carlos A., y Roger Gay. Complex Variables: An Introduction. New York [etc.]: Springer, 1991.

Cita MLA (9a ed.)

Berenstein, Carlos A., y Roger Gay. Complex Variables: An Introduction. Springer, 1991.